Legal claims defining the scope of protection. Each claim is shown in both the original legal language and a plain English translation.
1. A method performed by a terminal in a wireless communication system, the method comprising: in case that uplink data occurs during a sleep period based on a discontinuous reception (DRX) operation in a connected state, transmitting, to a base station, a scheduling request for requesting an uplink resource and starting an active period based on the scheduling request; monitoring a downlink control channel to receive information associated with the uplink resource from the base station, during the active period; in case that the information associated with the uplink resource is received on the downlink control channel, transmitting, to the base station, the uplink data based on the uplink resource; and in case that a command associated with the active period is received from the base station, stopping the active period.
2. The method of claim 1 , further comprising: maintaining the active period in case that downlink data is received from the base station.
A method for managing communication in a wireless network involves controlling an active period of a user device to conserve power while ensuring timely data reception. The method includes monitoring the device's communication state and adjusting the active period based on network conditions. Specifically, the active period is extended or maintained when downlink data is received from a base station, ensuring continuous data transfer without unnecessary power consumption. This approach prevents the device from entering an idle or sleep state prematurely, which could disrupt ongoing data transmissions. The method also includes dynamically adjusting the active period duration based on factors such as data traffic patterns, network load, and device power levels. By maintaining the active period during data reception, the method ensures reliable communication while optimizing energy efficiency. The solution addresses the challenge of balancing power savings with uninterrupted data delivery in wireless networks, particularly in scenarios where devices frequently transition between active and idle states. The method is applicable to various wireless communication standards, including cellular and IoT networks, where power efficiency is critical.
3. The method of claim 1 , further comprising: receiving, from the base station, feedback information corresponding to the uplink data.
A method for wireless communication involves transmitting uplink data from a user device to a base station. The method includes receiving feedback information from the base station, which corresponds to the uplink data. This feedback may indicate successful reception, request retransmission, or provide other acknowledgment or control information. The method may also involve determining a transmission parameter for the uplink data, such as a modulation and coding scheme, based on channel conditions or other factors. The user device may then transmit the uplink data using the determined parameter. The feedback received from the base station helps ensure reliable communication by confirming data delivery or triggering retransmission if needed. This method is applicable in wireless networks where efficient and reliable data transmission between user devices and base stations is critical. The feedback mechanism allows the base station to dynamically adjust communication parameters to optimize performance. The method may be used in various wireless communication standards, including 5G and beyond, where adaptive transmission techniques are essential for maintaining high data rates and low latency.
4. A terminal in a wireless communication system, the terminal comprising: a transceiver; and a controller configured to control to: in case that uplink data occurs during a sleep period based on a discontinuous reception (DRX) operation in a connected state, transmit, to a base station via the transceiver, a scheduling request for requesting an uplink resource and start an active period based on the scheduling request; monitor a downlink control channel to receive information associated with the uplink resource from the base station, during the active period; in case that the information associated with the uplink resource is received on the downlink control channel, transmit, to the base station via the transceiver, the uplink data based on the uplink resource; and in case that a command associated with the active period is received from the base station, stop the active period.
5. The terminal of claim 4 , wherein the controller is further configured to maintain the active period in case that downlink data is received from the base station.
This invention relates to wireless communication terminals, specifically addressing power management in devices operating in a discontinuous reception (DRX) mode. The problem solved is inefficient power consumption when a terminal must frequently wake up to check for downlink data from a base station, leading to unnecessary battery drain. The terminal includes a controller that manages an active period during which the terminal monitors for downlink data. The controller is configured to extend or maintain this active period if downlink data is received from the base station. This prevents the terminal from prematurely entering a low-power sleep state, ensuring all incoming data is processed before transitioning back to sleep. The controller also adjusts the active period based on the amount of received data, optimizing power usage by avoiding unnecessary wake-ups. Additionally, the terminal may include a receiver to detect downlink data and a transmitter to send uplink signals, with the controller coordinating these components to minimize power consumption while maintaining communication reliability. The invention improves battery life in wireless devices by dynamically adapting the active period to actual data traffic conditions.
6. The terminal of claim 4 , wherein the controller is further configured to receive, from the base station via the transceiver, feedback information corresponding to the uplink data.
7. A method performed by a base station in a wireless communication system, the method comprising: in case that uplink data occurs during a sleep period based on a discontinuous reception (DRX) operation in a connected state, receiving, from a terminal, a scheduling request for requesting an uplink resource and starting an active period based on the scheduling request; transmitting, to the terminal, information associated with the uplink resource on a downlink control channel; and receiving, from the terminal, the uplink data based on the uplink resource; and transmitting, to the terminal, a command associated with the active period and stopping the active period.
This invention relates to wireless communication systems, specifically improving efficiency in discontinuous reception (DRX) operations for terminals in a connected state. DRX is used to conserve power by alternating between active and sleep periods, but existing methods may delay uplink data transmission when data occurs during a sleep period, leading to inefficiencies. The method involves a base station handling uplink data during a terminal's sleep period in a DRX cycle. When uplink data arises during the sleep period, the terminal sends a scheduling request to the base station, triggering the start of an active period. The base station then allocates an uplink resource and transmits this information to the terminal via a downlink control channel. The terminal uses the allocated resource to send the uplink data to the base station. After receiving the data, the base station sends a command to the terminal to end the active period, allowing the terminal to return to sleep mode. This approach ensures timely uplink data transmission without unnecessary prolonged active periods, optimizing power consumption and network efficiency. The method dynamically adjusts the active period based on actual data transmission needs, reducing latency and improving resource utilization in wireless communication systems.
8. The method of claim 7 , further comprising: maintaining the active period in case that downlink data is transmitted to the terminal.
A method for managing communication in a wireless network involves controlling an active period of a terminal to conserve power while ensuring efficient data transmission. The method includes monitoring the terminal's communication state and adjusting the active period based on whether uplink or downlink data is being transmitted. Specifically, the active period is maintained when downlink data is transmitted to the terminal, ensuring continuous reception of incoming data without unnecessary interruptions. Additionally, the method may involve terminating the active period when no data is being transmitted, allowing the terminal to enter a low-power state to save energy. This approach optimizes power consumption by dynamically adapting the active period to the terminal's communication needs, reducing unnecessary power usage while maintaining reliable data transmission. The method is particularly useful in wireless networks where power efficiency is critical, such as in IoT devices or mobile terminals operating on battery power. By dynamically adjusting the active period, the method ensures that the terminal remains responsive to incoming data while minimizing energy consumption.
9. The method of claim 7 , further comprising: transmitting, to the terminal, feedback information corresponding to the uplink data.
10. A base station in a wireless communication system, the base station comprising: a transceiver; and a controller configured to control to: in case that uplink data occurs during a sleep period based on a discontinuous reception (DRX) operation in a connected state, receive, from a terminal via the transceiver, a scheduling request for requesting an uplink resource and start an active period based on the scheduling request; transmit, to the terminal via the transceiver, information associated with the uplink resource on a downlink control channel; receive, from the terminal via the transceiver, the uplink data based on the uplink resource; and transmit, to the terminal via the transceiver, a command associated with the active period and stop the active period.
11. The base station of claim 10 , wherein the controller is further configured to maintain the active period in case that downlink data is transmitted to the terminal.
12. The base station of claim 10 , wherein the controller is further configured to transmit, to the terminal via the transceiver, feedback information corresponding to the uplink data.
A base station in a wireless communication system is configured to receive uplink data from a terminal and process the received data. The base station includes a transceiver for wireless communication with the terminal and a controller that manages data transmission and reception. The controller is further configured to transmit feedback information to the terminal via the transceiver, acknowledging or confirming the receipt of the uplink data. This feedback mechanism ensures reliable data transmission by allowing the terminal to verify whether the transmitted data was successfully received by the base station. The feedback information may include acknowledgment (ACK) or negative acknowledgment (NACK) signals, depending on whether the uplink data was correctly decoded. This system improves communication reliability in wireless networks by providing real-time confirmation of data delivery, reducing the need for retransmissions and enhancing overall efficiency. The base station may also include additional components, such as a memory for storing data and a processor for executing control functions, to support these operations. The feedback transmission is synchronized with the uplink data reception to maintain low-latency communication. This technology is particularly useful in high-speed wireless networks where timely and accurate feedback is critical for maintaining data integrity and throughput.
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March 2, 2021
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